Differential axial shortening in high rise buildings with concrete filled tube columns

This research developed and applied a comprehensive technique to evaluate the Differential Axial Shortenings (DASs) in composite high rise buildings. The findings of this research will help to reduce the adverse effects of DASs and facilitate safer designs of buildings. A method, based on the vibration characteristics of the building, to update the initial predictions during the service stage of the building has also been developed and applied